ET Atoms & Molecules 8/22/25

What two subatomic particles are found in the nucleus?

• proton and electron

• electron and neutron

• neutron and proton

• neutron and electron

Tags

NGSS.MS-PS1-1

What is the electron?

• a negatively charged particle that orbits the nucleus

• a neutral particle found in the nucleus

• a positively charged particle found in the nucleus

• a neutral particle that orbits the nucleus

Tags

NGSS.MS-PS1-1

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

Explain the difference between an atom and a molecule.

• One molecule is made of one atom.
• One molecule is always made of different particles.
• One molecule is made of more than one atom.
• One molecule is made of more than two atoms.

Tags

NGSS.MS-PS1-1

How many Molecules are in 2Al₂O₃

• 7

• 2

• 6

• 10

Answer explanation

Al = Aluminum

O = Oxygen

2Al₂O₃

The 2 in front means that there are 2 molecules.